Except that the gas has a chemical put in it to make you feel sick to discourage people from doing it for fun.
Michael... If your ped doesn't have more than one gear it really won't do what you want unless you increase the gear ratio a lot.
In other words a one speed ped motor will only go faster if you rev it higher.. revving higher means the motor is doing something the designer didn't intend it to do, so it is likely to break something sooner or later.
Now it will accelerate harder getting to top speed... (if you do everything RIGHT).
But I don't see the point of making a lot of changes to your ped... when ... Once you make the changes, you will HAVE to run with your chosen fuel... You can't go back to normal fuel unless you change everything back.